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v CICS remains operational, but the task currently in control terminates.
v CICS terminates (see “Shutdown requested by the operating system” on page
29).
If a program check occurs when a user task is processing, the task abends with an
abend code of ASRA. If a program check occurs when a CICS system task is
processing, CICS terminates.
If an operating system abend has occurred, CICS searches the system recovery
table, DFHSRT. The system recovery table contains a set of operating system abend
codes that you want CICS to recover from. CICS searches the table looking for the
system abend code issued by the system:
v If a match is not found, CICS is terminated.
v If a match is found, and a CICS system task is processing, CICS is terminated.
v If a match is found, and a user task is processing, the default action is to abend
the task with an abend code of ASRB. However, you can change this action by
coding a global user exit program at exit point XSRAB. The value of the return
code from XSRAB determines which of the following happens next:
– The task terminates with the ASRB abend code.
– The task terminates with the ASRB abend code and CICS cancels any
program-level abend exits that are active for the task.
– CICS terminates.
For programming information about the XSRAB exit point, see the CICS
Customization Guide.
CICS supplies a sample system recovery table, DFHSRT1$, that has a default set of
abend codes. You can modify the sample table to define abend codes that suit your
own requirements. The source of DFHSRT1$ is supplied in the
CICSTS41.CICS.SDFHSAMP library. For more information about the system
recovery table, see the CICS Resource Definition Guide.
Note: Because it is possible to introduce recursions between program checks and
abends, take great care when coding a global user exit program at the XSRAB exit
point.
Chapter 8. Unit of work recovery and abend processing 95